Grevillea prominens is a shrub of the genus Grevillea native to a small area in the South West region of Western Australia. The spreading shrub typically grows to a height of 0.5 to 1.7 metres (2 to 6 ft) and has non-glaucous branchlets. It has simple leaves with dissected blades and revoluted margins that are 30 to 50 millimetres (1.18 to 1.97 in) long. It blooms from September to October produces an irregularly shaped white or cream inflorescence located on a raceme at the branchlet terminus. A smooth obovoid glabrous fruit follows.